Mass Spectrometry as an Instructional Tool in the Under- graduate Laboratories

西佛罗里达大学化学系最近购买了一台气相色谱/质谱仪(GC/MS)，该仪器正在六门本科课程和定向学生研究中得到应用。由于该系统的使用，基础有机化学和高级有机化学以及化学和相关健康科学专业的课程都得到了显著的加强。学生能够收集和评估第一手数据，例如，(1)通过检查形成的分子离子来分离和识别卤代烃，(2)通过检查裂解离子来区分对羟基苯甲酸甲酯和对甲氧基苯甲酸等异构体，(3)制备和分析挥发性金属化合物，以及(4)评估水中有机污染物的供应。

A gas chromatograph/mass spectrometer (GC/MS), which has recently been acquired by the Chemistry Department of the University of West Florida is finding application in six undergraduate courses and in directed student research. Courses in basic organic chemistry, with a variety of majors, and advanced organic chemistry, with chemistry and allied health science majors are significantly enhanced by the availability of this system. Students are enabled to collect and evaluate firsthand data as, for example, (1) separating and identifying halocarbons by examining the molecular ions formed, (2) differentiating between isomers such as methyl p-hydroxybenzoate and p-methoxybenzoic acid by examining the fragmentation ions, (3) preparing and analyzing volatile organometallics, and (4) evaluating water supplies for organic contaminants.